pt 3: NYS Chemistry Regents Essential VOCABS
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Chemical Reactions & Equations
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12 Terms
Activation Energy
the minimum energy required for a chemical reaction to occur
Catalyst
a substance that increases reaction rate without being consumed
Chemical Equation
a symbolic representation of a chemical reaction
Coefficient
numbers placed in front of formulas in chemical equations to balance them
Combustion
a reaction involving rapid combination with oxygen, producing heat and light
Decomposition
a reaction where one compound breaks down into two or more simpler substances
Endothermic
a reaction that absorbs heat energy from surroundings
Exothermic
a reaction that releases heat energy to surroundings
Oxidation
loss of electrons or increase iin oxidation number
Reduction
gain of electrons or decrease in oxidation number
Single Replacement
a reaction where one element replaces another in a compound
Synthesis
a reaction where two or more substances combine to form one compound
Note 
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